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st: how to delete some observations
I would appreciate if you could give me some advice on the following
I had a data on market participation of households. The number of
times each household participates in the different markets varies
between the households. When I have reshape the data into a long
format the data became as follows:
ID market choice price
1 a1 0 .
1 f1 0 .
1 s1 1 x
1 u1 0 .
1 a2 0 .
1 f2 0 .
1 s2 0 .
1 u2 0 .
2 a1 1 x
2 f1 0 .
2 s1 0 .
2 u1 0 .
2 a2 0 .
2 f2 0 .
2 s2 0 .
2 u2 1 x
So from the sample, household 1 traded only one time and
household 2 traded twice. What I would like to is hence household
1 traded only once, I need to delete the second set of observations
for this household making no changes to the observations of
I have tried to do various options, but they did not work. I would
appreciate any help.
School of Economic Studies
University of Manchester
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